Mountain Green climate

Mountain Green Weather in September

NOAA 1991-2020 normals for Weber Basin Pump Plt 3, 10.8 km from Mountain Green

Average highs run from 83°F on September 1 to 71°F on September 30, and lows from 56°F to 46°F. Normal precipitation for the month is 1.70 in over about 6 wet days.

September day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Mountain Green, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

September at a glance

Average high
78°F
Average low
51°F
Precipitation
1.70 in
Record high
106°FSep 6, 2022
Record low
30°FSep 28, 2013
Chance of a freeze
8%
Days of 90°F or more
1.8
Daylight
13 h 06 min to 11 h 47 min
Cloud cover
38%
Humidity
43%
Dew point
35°F
Wind
5.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Sep 183°F56°F100°F 202244°F 202416%0%
Sep 283°F56°F98°F 201954°F 202317%0%
Sep 383°F56°F100°F 202248°F 201117%0%
Sep 482°F55°F100°F 201746°F 202317%0%
Sep 582°F55°F98°F 202241°F 202317%0%
Sep 682°F55°F106°F 202241°F 202318%0%
Sep 782°F54°F104°F 202248°F 202318%0%
Sep 881°F54°F99°F 202240°F 202018%0%
Sep 981°F54°F96°F 202143°F 202018%0%
Sep 1081°F53°F93°F 202144°F 201419%0%
Sep 1180°F53°F90°F 202440°F 201619%0%
Sep 1280°F53°F88°F 201544°F 201219%0%
Sep 1379°F52°F87°F 201544°F 201219%0%
Sep 1479°F52°F88°F 201940°F 202419%0%
Sep 1579°F51°F90°F 201846°F 201619%0%
Sep 1678°F51°F87°F 202043°F 201520%0%
Sep 1778°F51°F88°F 201440°F 202420%0%
Sep 1877°F50°F88°F 202038°F 202420%0%
Sep 1977°F50°F86°F 201640°F 201720%0%
Sep 2076°F50°F91°F 202236°F 201720%0%
Sep 2176°F49°F84°F 202032°F 201720%0%
Sep 2275°F49°F84°F 201536°F 201720%0%
Sep 2375°F49°F85°F 201539°F 201720%0%
Sep 2474°F48°F87°F 201539°F 201720%0%
Sep 2574°F48°F91°F 201539°F 201720%0%
Sep 2673°F47°F89°F 202440°F 201620%0%
Sep 2772°F47°F86°F 202336°F 201320%0%
Sep 2872°F47°F90°F 201830°F 201320%0%
Sep 2971°F46°F84°F 202437°F 201920%0%
Sep 3071°F46°F85°F 201134°F 201920%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Mountain Green, in percent, and of at least 0.1 inch of snowfall.05101520251102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MDT).

September 1
sunrise 6:54 AM, sunset 8:00 PM
September 30
sunrise 7:23 AM, sunset 7:10 PM

Every day of September: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00429346 (Weber Basin Pump Plt 3), public domain. Records: NOAA GHCN-Daily, station USC00429346, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.